we have had crews inside, outside sfo, obviously, all day. charles clifford is standing by live now with an update. >> reporter: right now i'm inside terminal 3 here at sfo. this is the domestic terminal, the united terminal. and behind me, there's still a handful of people trying to check in before midnight. it was down the hall hours ago. it's just a few folks now. this is where the rebooking is happening! this is where folks are whose flights were canceled today. they have been in line for hours trying to rebook flights. also people coming in from other locations discovering their connecting flights were canceled. this is the board here, at the united terminal, and tonight before midnight, pretty much all of the flights are either canceled or delayed or closed! there's maybe two flights left leaving tonight before midnight. the situation improves if you get into tomorrow morning, july 7th, you can see there's on-times, things are starting to get back to normal tomorrow morning, kind of. so we'll see if that holds up. >>> kron4 is expanding